ACTA AGRICULTURAE BOREALI-SINICA ›› 2006, Vol. 21 ›› Issue (S1): 99-103. doi: 10.3321/j.issn:1000-7091.2006.z1.024

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Studies on Heat Resistance Identification Methods of Head Lettuce (Lactuca sativa var. capitata L.)

GU Jian-tian, FAN Shuang-xi, ZHANG Xi-chun, HAN Liang-yu   

  1. Department of Plant Science and Technology, Beijing Agricultural College, Beijing 102206, China
  • Received:2006-09-20 Published:2006-12-31

Abstract: Major morphological and economical characters and some physiological and biochemical changes of head lettuce (Lactuca sativa var. capitata L.) under heat stress were studied. Results showed that "bolting time" was the basic morphological index for heat resistant identification. The activities of POD and SOD, contents of soluble protein, soluble sugar, proline and malonyldihyde were significantly correlated with the basic morphological indexes, and suitable to be applied as auxiliary indexes in heat resistant identif ication of head lettuce.

Key words: Head lettuce (Lactuca sativa var. capitata L.), Heat resistance, Identification

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Cite this article

GU Jian-tian, FAN Shuang-xi, ZHANG Xi-chun, HAN Liang-yu. Studies on Heat Resistance Identification Methods of Head Lettuce (Lactuca sativa var. capitata L.)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(S1): 99-103. doi: 10.3321/j.issn:1000-7091.2006.z1.024.